EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:switches
LIBS:relays
LIBS:motors
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:lts
EELAYER 25 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 2 2
Title "Power Supply"
Date "2018-02-06"
Rev "AA"
Comp "Let's Talk Science"
Comment1 "Shawn Nock <shawn@monadnock.ca>"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L AP3012 U?
U 1 1 5A79E0C7
P 7350 4850
F 0 "U?" H 7550 5050 60  0000 C CNN
F 1 "AP3012" H 7350 4650 60  0000 C CNN
F 2 "" H 7250 4800 60  0001 C CNN
F 3 "" H 7250 4800 60  0001 C CNN
	1    7350 4850
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 5A79E3D2
P 7150 5300
F 0 "#PWR?" H 7150 5050 50  0001 C CNN
F 1 "GND" H 7150 5150 50  0000 C CNN
F 2 "" H 7150 5300 50  0001 C CNN
F 3 "" H 7150 5300 50  0001 C CNN
	1    7150 5300
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR?
U 1 1 5A79E3E8
P 8050 4450
F 0 "#PWR?" H 8050 4300 50  0001 C CNN
F 1 "+3.3V" H 8050 4590 50  0000 C CNN
F 2 "" H 8050 4450 50  0001 C CNN
F 3 "" H 8050 4450 50  0001 C CNN
	1    8050 4450
	1    0    0    -1  
$EndComp
Text HLabel 8750 4950 2    60   Input ~ 0
n5V_SHDN
$Comp
L L L?
U 1 1 5A79E407
P 7300 4500
F 0 "L?" V 7250 4500 50  0000 C CNN
F 1 "10uH" V 7375 4500 50  0000 C CNN
F 2 "" H 7300 4500 50  0001 C CNN
F 3 "" H 7300 4500 50  0001 C CNN
	1    7300 4500
	0    -1   -1   0   
$EndComp
$Comp
L C C?
U 1 1 5A79E525
P 8050 5150
F 0 "C?" H 8075 5250 50  0000 L CNN
F 1 "1uF" H 8075 5050 50  0000 L CNN
F 2 "" H 8088 5000 50  0001 C CNN
F 3 "" H 8050 5150 50  0001 C CNN
	1    8050 5150
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 5A79E606
P 6250 4950
F 0 "C?" H 6275 5050 50  0000 L CNN
F 1 "1uF" H 6275 4850 50  0000 L CNN
F 2 "" H 6288 4800 50  0001 C CNN
F 3 "" H 6250 4950 50  0001 C CNN
	1    6250 4950
	1    0    0    -1  
$EndComp
Wire Wire Line
	7450 4500 8050 4500
Wire Wire Line
	6900 4500 6900 4750
Wire Wire Line
	6900 4500 7150 4500
Connection ~ 6900 4500
$Comp
L R R?
U 1 1 5A79E709
P 6600 4700
F 0 "R?" V 6680 4700 50  0000 C CNN
F 1 "30k" V 6600 4700 50  0000 C CNN
F 2 "" V 6530 4700 50  0001 C CNN
F 3 "" H 6600 4700 50  0001 C CNN
	1    6600 4700
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 5A79E796
P 6600 5150
F 0 "R?" V 6680 5150 50  0000 C CNN
F 1 "10k" V 6600 5150 50  0000 C CNN
F 2 "" V 6530 5150 50  0001 C CNN
F 3 "" H 6600 5150 50  0001 C CNN
	1    6600 5150
	1    0    0    -1  
$EndComp
Wire Wire Line
	6900 4950 6600 4950
Wire Wire Line
	6600 4500 6250 4500
Wire Wire Line
	6250 4500 6250 4800
Wire Wire Line
	6250 5100 6250 5300
Wire Wire Line
	6250 5300 8050 5300
Connection ~ 6600 5300
Wire Wire Line
	8050 4450 8050 5000
Wire Wire Line
	7800 4750 8050 4750
Connection ~ 8050 4750
Connection ~ 8050 4500
Wire Wire Line
	7800 4950 8750 4950
$Comp
L +5V #PWR?
U 1 1 5A79EB81
P 6250 4500
F 0 "#PWR?" H 6250 4350 50  0001 C CNN
F 1 "+5V" H 6250 4640 50  0000 C CNN
F 2 "" H 6250 4500 50  0001 C CNN
F 3 "" H 6250 4500 50  0001 C CNN
	1    6250 4500
	1    0    0    -1  
$EndComp
Wire Wire Line
	6600 4850 6600 5000
Connection ~ 6600 4950
Wire Wire Line
	6600 4550 6600 4500
Wire Wire Line
	6900 4850 6800 4850
Wire Wire Line
	6800 4850 6800 5300
Connection ~ 6800 5300
$Comp
L D_Schottky D?
U 1 1 5A79ED7A
P 6750 4500
F 0 "D?" H 6750 4600 50  0000 C CNN
F 1 "1N5819" H 6750 4700 50  0000 C CNN
F 2 "" H 6750 4500 50  0001 C CNN
F 3 "" H 6750 4500 50  0001 C CNN
	1    6750 4500
	1    0    0    -1  
$EndComp
$Comp
L Barrel_Jack J?
U 1 1 5A79F4E7
P 4050 2550
F 0 "J?" H 4050 2760 50  0000 C CNN
F 1 "4.6-15V" H 4050 2400 50  0000 C CNN
F 2 "" H 4100 2510 50  0001 C CNN
F 3 "" H 4100 2510 50  0001 C CNN
	1    4050 2550
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 5A79F5EE
P 5050 2750
F 0 "#PWR?" H 5050 2500 50  0001 C CNN
F 1 "GND" H 5050 2600 50  0000 C CNN
F 2 "" H 5050 2750 50  0001 C CNN
F 3 "" H 5050 2750 50  0001 C CNN
	1    5050 2750
	1    0    0    -1  
$EndComp
Wire Wire Line
	4350 2450 4750 2450
Wire Wire Line
	4450 2750 5500 2750
$Comp
L USB_B J?
U 1 1 5A79F6C3
P 2650 4750
F 0 "J?" H 2450 5200 50  0000 L CNN
F 1 "USB_B" H 2450 5100 50  0000 L CNN
F 2 "" H 2800 4700 50  0001 C CNN
F 3 "" H 2800 4700 50  0001 C CNN
	1    2650 4750
	1    0    0    -1  
$EndComp
NoConn ~ 2950 4750
NoConn ~ 2950 4850
$Comp
L GND #PWR?
U 1 1 5A79F8F4
P 2650 5250
F 0 "#PWR?" H 2650 5000 50  0001 C CNN
F 1 "GND" H 2650 5100 50  0000 C CNN
F 2 "" H 2650 5250 50  0001 C CNN
F 3 "" H 2650 5250 50  0001 C CNN
	1    2650 5250
	1    0    0    -1  
$EndComp
Wire Wire Line
	2550 5150 3150 5150
Wire Wire Line
	2650 5150 2650 5250
Connection ~ 2650 5150
Wire Wire Line
	2950 4550 3150 4550
$Comp
L AP1117-50 U?
U 1 1 5A79FF9F
P 5050 2450
F 0 "U?" H 5200 2200 50  0000 C CNN
F 1 "AP1117-50" H 4850 2600 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD:SOT-223-3Lead_TabPin2" H 5050 2650 50  0001 C CNN
F 3 "" H 5150 2200 50  0001 C CNN
	1    5050 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	4350 2650 4450 2750
$Comp
L +5V #PWR?
U 1 1 5A7A00D8
P 5500 2450
F 0 "#PWR?" H 5500 2300 50  0001 C CNN
F 1 "+5V" H 5500 2590 50  0000 C CNN
F 2 "" H 5500 2450 50  0001 C CNN
F 3 "" H 5500 2450 50  0001 C CNN
	1    5500 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	5350 2450 5500 2450
$Comp
L C C?
U 1 1 5A7A0240
P 4600 2600
F 0 "C?" H 4625 2700 50  0000 L CNN
F 1 "1uF" H 4625 2500 50  0000 L CNN
F 2 "" H 4638 2450 50  0001 C CNN
F 3 "" H 4600 2600 50  0001 C CNN
	1    4600 2600
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 5A7A02C6
P 5500 2600
F 0 "C?" H 5525 2700 50  0000 L CNN
F 1 "4.7uF" H 5525 2500 50  0000 L CNN
F 2 "" H 5538 2450 50  0001 C CNN
F 3 "" H 5500 2600 50  0001 C CNN
	1    5500 2600
	1    0    0    -1  
$EndComp
Connection ~ 5050 2750
Connection ~ 4600 2450
Connection ~ 4600 2750
$Comp
L +5V #PWR?
U 1 1 5A7A0403
P 3150 4550
F 0 "#PWR?" H 3150 4400 50  0001 C CNN
F 1 "+5V" H 3150 4690 50  0000 C CNN
F 2 "" H 3150 4550 50  0001 C CNN
F 3 "" H 3150 4550 50  0001 C CNN
	1    3150 4550
	1    0    0    -1  
$EndComp
Wire Notes Line
	5950 5650 5950 4050
Wire Notes Line
	5950 4050 8500 4050
Wire Notes Line
	8500 4050 8500 5650
Wire Notes Line
	8500 5650 5950 5650
Text Notes 5950 4050 0    60   ~ 0
5V from Microbit's 3V3
Wire Notes Line
	2050 4000 2050 5700
Wire Notes Line
	2050 5700 3400 5700
Wire Notes Line
	3400 5700 3400 4000
Wire Notes Line
	3400 4000 2050 4000
Text Notes 2050 4000 0    60   ~ 0
Power-only USB
Connection ~ 5500 2450
Wire Notes Line
	3750 2100 3750 3000
Wire Notes Line
	3750 3000 5850 3000
Wire Notes Line
	5850 3000 5850 2100
Wire Notes Line
	5850 2100 3750 2100
Text Notes 3750 2100 0    60   ~ 0
Wall-wart Power Supply
$Comp
L CP C?
U 1 1 5A7A108D
P 3150 4800
F 0 "C?" H 3175 4900 50  0000 L CNN
F 1 "47uF" H 3175 4700 50  0000 L CNN
F 2 "" H 3188 4650 50  0001 C CNN
F 3 "" H 3150 4800 50  0001 C CNN
	1    3150 4800
	1    0    0    -1  
$EndComp
Wire Wire Line
	3150 5150 3150 4950
Wire Wire Line
	3150 4550 3150 4650
Connection ~ 3150 4550
$EndSCHEMATC